Heathrow executives are defending their response to a fire that shut down Europe’s busiest air hub for almost a day.

Heathrow’s chief executive has defended the airport’s response to the power outage and shutdown that sparked global travel chaos, apologizing to stranded passengers and confirming the airport is “operating as normal” Saturday.

Britain's Heathrow defended its decision to shut down operations at Europe's busiest airport last Friday as the blame game intensified over an 18-hour closure which cost airlines tens of millions of pounds and stranded thousands of passengers.

British police said a fire which caused Heathrow Airport to close for 18 hours last week was no longer being treated as a potentially criminal matter.Heathrow, Europe's busiest airport, shut on Friday after a fire at a nearby substation cut its power supply,

LONDON (Reuters) - British police said the substation fire which caused Heathrow Airport to shut down for 18 hours last week was no longer being treated as a potentially criminal matter after inquiries found no evidence to suggest the incident was suspicious.